Tube-making machine



S. DERRINGER- TUBE MAKING MACHINE- APPLICATION FILED DEC-6. 191s.

Patented May 18, 1920.

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TUBE MAKING MACHINE. APPLICATION FILED DEC-6, 1916.

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TUBE MAKING MACHlNE. APPLICATION FILED DEC.6, 1916.

Patented May 18, 1920.

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APPLICATION FILED DEC-6| 1916. I

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UNITED STATES PATENT ()FFICE.

STEPHEN DERRINGER, OF CAMDEN, NEWJ'ERSEY, ASSIGNOR TO EMILY K. DIETZ, OF PHILADELPHIA, PENNSYLVANIA, TRADING UNDER THE FIRM-NAME OF DIETZ MACHINE WORKS.

TUBE-MAKING MACHINE.

Specification of Letters Patent.

Patented May 18, 1920.

To all whom it may concern Be it known that I, STEPHEN DERRINGER, a citizen of the United States, residing in Camden, Camden county, New Jersey, have invented Tube-Making Machines, of which the following is a specification.

One object of this invention is to provide a machine for making a stitched pasteboard or paper tube, which shall have its parts so arranged as to be capable of adjustment to permit of the manufacture of tubes of widely varying sizes.

Another object of the invention is to provide a tube making machine having knifesupporting and paper feeding means so associated with each other and with tube rolling mechanism as to be capable of adjustment to form tubes of different lengths; the arrangement and construction being simple, substantial and not likely to get out of order.

These objects and other advantageous ends I secure as hereinafter set forth, reference being had to the accompanying drawings, in which,

Figures 1 and 2 are elevations of opposite sides of a machine constructed according to my invention;

Figs. 3 and 4 are respectively front and rear elevations of my machine;

Fig. 5 is a plan;

Fig. 6 is a vertical section on the line 6-6, Fig. 5;

Fig. 7 is a fagmentary plan of the knife carrier showing it with certain of the knife sections arranged in position for cutting blanks for small sized tubes;

Figs. 8 and 9 are vertical sections on the lines 8-8 .and 9 9, Fig. 7;

Figs. 10 and 11 are fragmentary perspective views showing one end. of the knife carrier in an inverted position with the knife sections arranged for cutting large and small sized blanks respectively;

Figs. 12 and 1.3 are respectively plans of the lower dies or knife sections for making the two sizes of cores or tubes;

Figs. 14 to 18 inclusive are diagrammatic perspective views illustrating the operation of the machine; and

Figs. 19 and 20 are respectively a side and an end elevation partly in section illustrating the preferred form of ratchet mechanism for driving the feed rolls.

In the above drawings 1 represents a sup- 8 while on the opposite end are mounted fast and loose pulleys 6 and 7. Said main shaft has fixed on it a gear 9 meshing with a larger gear 10 fixed to a second shaft 11 likewise carried by the frame members 2 and 3 and extending parallel to the shaft 5.

This second shaft has fixed to it a beveled gear 12 meshing with a second beveled gear 13 fixed to a shaft 14: carried in bearings pro- 'vided. by brackets 16 and 17 projecting from the side frame panel 3. On the end of this shaft, which projects at the rear of the machine, is fixed a crank 18 on whose pin is mounted the lower end of a toothed rack 19, whose upper portion meshes with the teeth of a gear 20 loosely carried by a shaft 21 but fixed to an arm 22. This latter shaft is carried in bearing structures 23 and 24 supported by the main frame and has fixed to it one of the paper feed rollers 25 as well as a ratchet wheel 26 and a gear wheel 27. Said ratchet wheel is so placed as to be enga ed by a pawl 28 carried by the arm 22 and the gear 27 meshes with a second gear 29 fixed to a second roller shaft 80 which carries a roller 31 cooperating with the roller 25 to feed a pasteboard or paper web to the machine.

Projecting upwardly from the top 4 of the frame structure adjacent the front and rear ends thereof respectively are a pair of guide structures 82 and 33 designed to insure vertical movement of the knife carrier 34: (Figs. 3, 5 and 7) and in the present case this has at that end adjacent the guide 33, lateral extensions which project so as to en gage wedge shaped blocks 35 (Fig. 5) which may be adjusted by suitable bolts to take up lost motion or regulate the position of the knife carrier. The rear end of said carrier (i. 6., that adjacent the guide 33) has fixed to and projecting downwardly from it a pair of comparatively heavy bars or rods 36 which extend through the frame top 4 and are rigidly connectedto a cross head 37. This is carried by a structure 38 whose lower end constitutes an eccentric strap engaging an eccentric 39 fixed to the shaft 14.

At the opposite or forward end of the the cutting edge of the knife 49.

knife carrier is a second downwardly projecting bar or rod at) whose lower end is connected to the upper end of a second strap 41 for engagement with an eccentric as fixed to the shaft 11. Obviously the shafts 11 and 1% turn in unison and the eccentrics thereon are so set that the bars 36 and 10 are simultaneously raised or lowered to equal extents to move the knife carrier vertically in its guides.

The knife carrier itself consists of an elongated plate-like casting properly reinforced by marginal webs or flanges and having projecting from its under face a pair of parallel longitudinally extending ribs 463 and 44, to either of which may be bolted an elongated knife blade or section 15. If the machine is to be adjusted to out blanks for small sized rolls, said blade 15 is bolted to the rib 4:?) (Fig. 11) and a pair of knife sections 46 and a? are likewise bolted to a block 4-.8 fixed to or cast integral with the carrier, so that their cutting edges extend away from the edge of the section 415 at angles of about 135 but on opposite sides of a vertical plane passing through said edge. A fourth knife section 49 is bolted to a rib or lug 50 on the knife carrier so as to extend from the outer end of the cutting edge of the section 46 in a line at right angles to the line of the section 45.

If the machine is to be used for making large sized rolls so that larger size blanks must be cut, the knife section 415 is bolted to the rib 44 (Fig. 10) and a knife section 51 is mounted to extend between one end of its cutting edge to the adjacent end. of Similarly another knife section 52 similar to the sec tion 51' extends from the point of junction of the cutting edge of the latter with the edge of the section 45 but in an opposite direction, there being provided on the knife carrier, removable ribs or blocks of which one is shown at 53, whereby these sections may be rigidly held in position.

It is noted that upon the top frame member 1 is mounted a flat plate 61 (Fig. 6) whose upper surface is slightly below a horizontal plane passing through the line of tangency of the two feed rolls 25 and 31, and when the machine is to be used to cut blanks for the larger size of core rolls, I mount upon said top frame member 4 two castings and 71 (Figs. 5, 6 and 12) whereby the fixed knife sections 78. 73 and 75 constituting the lower die are supported with their top surfaces in or slightly above the horizontal plane of the table 61 in such positions as to properly coact with the knife sections 45, 49, 51 and 52. Each of these lower or fixed knife sections is in the form of a plate supported in a substan tially horizontal plane and has slots for the reception of bolts or screws 7 6 (Figs. 5 and 12) whereby it may be adjustably clamped to its supporting casting 70 or 71 in any adjusted position. Horizontally extending bolts 77 are mounted insuitable flanges of these castings in positions to engage the rear edges of the lower knife blades or sections for adjusting their positions after the clamping screws 76 have been slacked off.

Another casting 72 (Figs. 7 and 13) is provided for supporting certain of the lower knife sections when the machine is to be used for cutting blanks for small rolls, and in this case the casting 70 is merely moved from the position shown in Fig. 12 to that shown in Fig. 13 so as to support the lower knife blade 78 in position to cooperate with the blade 45. The casting 72 then supports three lower knife blade sections 79, '79 and 80 in positions to cooperate with the upper blade sections 4l7, 16 and 4L9, it being understood that the top member at has suitably placed holes for the reception of bolts whereby all of the various castings may be properly held in the desired positions.

The shaft 11 has fixed to it a cam 54 (Figs. 2 and 3) designed to engage a roller 'on the free end of one arm of a lever 55 by a belt S l from a pulley on the shaft 5, the arrangement being such that while said lower nip roll is continuously driven,

the upper nip roll 60 is periodically moved into and out of engagement with it in timed relation with the other parts of the machine.

On the forward end of the table 61, which has a suitable opening 86 for the passage of the rolls 60 and 81, is mounted a winding mandrel 87 designed to be periodically rotated at predetermined times, for which purpose I fix to the shaft 11 a crank 88 connected through rod 89 (whose length is adjustable at will by a turnbuckle) with a toothed segment 90 carried by a pin 91 so as to be free to oscillate thereon when the shaft 11 is rotated. This segment is provided with a peripheral rack whose teeth mesh with those of a gear 92 fixed to a spindle 93 to which is also fixed a ratchet wheel 94. Loosely mounted on this spindle 93 is a gear wheel 95 which carries a pawl 96 (Fig. 2) coac-ting with the ratchet wheel 9 1; said gear also meshing with the teeth of a gear 97 fixed to the mandrel S7 or to its supporting spindle.

lVith this arrangement of parts the oscillation of the toothed segment 90 by the Shaft 11 causes the mandrel 87 to be intermittently turned in one direction through the gear 92, ratchet wheel 94, pawl 96 and gears 95 and 97. Said mandrel is provided with a sheet receiving groove 98, Fig. 16, so that a paper or pasteboard sheet properly fed toward it enters said groove and is held While said mandrel is turned.

Any suitable form of mechanism may be provided for placing and clenching a staple or wire stitch in the wound-up sheet on the mandrel to hold the outer free end of such sheet so that it cannot uncoil but since this mechanism forms no part of my invention, I have merely indicated it in outline at 100 in Fig. 3 ;its various parts being operated at the proper times by an oscillatory mem ber 99 connected through a link 101 with one arm of a lever 102 whose second arm is connected through another link 103 with a lever 104. This latter is periodically actuated so as to be swung on its supporting shaft 56 by a cam 105 fixed to the shaft 11 and operative upon a roller 106 on said arm.

For stripping the finished tube from the mandrel I provide an endless chain 107 carried upon a pair of sprocket Wheels 108 and 109 so that one of its runs extends substantial ly parallel with and adjacent to said mandrel. On this chain I mount a semiannular stripper 1'10 curved concentrically with the surface of the mandrel and moved by the chain so as to slide a tube longitudinally ofi the unsupported end of said mandrel at the proper time.

The two sprockets 108 and 109 are respectively mounted on vertical spindles 111 and 112, Figs. 1, 2 and 5, and the first of said spindles also has fixed to it a beveled gear 113 driven from a second beveled gear 114 fixed to a. shaft 115 to which is also fixed a sprocket wheel 116. This latter is operatively connected toa second sprocket wheel 117 on the shaft- 5 through a sprocket chain 118.

In order to prevent possible movement of the pasteboard sheet during the action of the various knife sections, I provide the knife carrier 34 with two series of sockets 120 and 121 of which there are two immediately adjacent the ribs 43 and 44. Said sockets are in the form of tubular structures projecting downwardly from the under face of the knife carrier and each of them contains a spring 122, Fig. 6, designed to operate upon a presser-foot 123 in the shape of an elongated plate extending par allel to the said ribs. This plate is carried by bolts or rods 124 which extend centrally through the springs 122 and through the body of the knife carrier, being each provi ded at its upper end with a head. There is obviously but a single presser-foot and its pair of springs and guide bolts, and the are shifted to the second set of sockets so that as shown in Fig. 6, the presser-foot coacts with the knife section 45. Similarly as shown in Fig. 11, when the knife blade 45 is fixed to the rib 43, the presser-foot is moved to act on the pasteboard sheet in the immediate vicinity of said blade.

Under conditions of operation the feed rolls 25 and 31 are periodically turned from the shaft 14 which is continuously driven from the main shaft 5, so that a paper web a? is fed from a supply roll of the same (Fig. 6) onto the table 61. Immediately after the predetermined amount of said web has been delivered, the feeding of these rolls ceases and the knife carrier 34 with its attached blades is lowered, cutting the end of the web into the shape shown in Fig. 15, so that it is beveled at an acute vangle at the end'of one side.

Another feeding of the rolls 25 and 31 ad vances the web from the position shown in Fig. 15 to that shown in Fig. 16, and the subsequent action of the knife carrier 84 severs a blank :0 from the end of said web, at the same time causing the blades 49 and 51 with their associated lower or fixed knife sections to cut the central part of the end of this blank accurately perpendicular to its sides and also to bevel the second corner of said end. The nip roll 60 is timed to now move toward its cooperating roll 81 to grip the blank :11 and this latter roll, being continuously driven, moves said blank at right angles to the line of movement of the web, bringing its uncut edge into the gripping groove 98 of the mandrel. This latter thereupon turns and winds up the blank into a tubular form as indicated in Fig. 17, after which the fastening mechanism operates to sew or staplethe free end 00 of the blank to the body of the tube. The curved stripper 110 carried by the chain 107 is then brought into engagement with one end of the finished roll and slides it longitudinally off of the mandrel.

In order to adjust the machine to make tubes shorter in length than those made with the dies shown in Figs. 5 to 10, for example, it is necessary to change the position of the knife blade 45 from the rib 44 to the rib 43 and to replace the knife sections 51 and 52 and their supporting blocks by the sections 46 and 47 with their appropriate supporting block 48 as indicated in Fig. 11.

Obviously, the lower die is likewise altered by moving the casting 7 0 from the position shown in Fig. 12 to the position of Fig. 13 in which its knife blade 78 will properly ooact with the knife blade on the rib 43 it being understood that the top 4: is provided with suitable holes for these as well as for the other adjustable parts of said die. Likewise the casting 71 is replaced by the casting 72 which carries the blades 79, 79 and 80 for coacting with the upper blades 4:6, 47 and 49.

Obviously the length of material delivered by the feed rolls at each operation will be less when the short tubes are to be formed than when the machine is adjusted to form those of the greater length. For this purpose the throw of the crank 18 may be adjusted to vary the stroke of the toothed rack 19 so as to alter the angle through which the two rolls 25 and 31 are rotated.

In order to render the operation of the pawl and ratched 28-26 noiseless and also to make certainty of action with a minimum of lost motion, I mount on the shaft 21 on the opposite side of the ratchet wheel 26 from the arm 22, a second arm 22 connected to the pawl 28 by a pin 28 and frictionally held to a bushing on said shaft by a series of bolts 22", the pin being nearer the shaft than is the pivot of the pawl. Under conditions of use when the arm 22 is turned in a clockwise direction, the pawl 28 is likewise swung on its pivot by the pin 28 so that its teeth are at once raised out of engagement with those of the ratchet wheel. Thereafter when the direction of movement of the arm 22 is reversed, the frictionally held arm 22 acts through the pin 28 to at once swing the pawl 28 into position with its several teeth in mesh with the teeth of the ratchet.

1. The combination of a supporting struc ture; a relatively fixed blade thereon; two holding devices for attaching said blade to said structure in either of two positions; a knife carrier; a second blade; two holding devices for mounting said second blade on said carrier in either of two positions to cause it to cooperate with said fixed blade in either of its positions; means for actuating the knife carrier; and automatic sheet feeding means adjustable to deliver more material to the blades when these are in one position than when they are in the other position.

2. The combination of a supporting struc ture; a relatively fixed blade thereon; two parallel receiving elements for mounting said blade on said structure in either of two positions; a knife carrier; a second blade mounted on said carrier in a plane substantially at right angles to the plane of the first blade; means for mounting said sec ond blade on said carrier in either of two positions to cause it to cooperate with said fixed blade in either of its positions; means for actuating the knife carrier; and automatic sheet feeding means adjustable to deliver a greater length of material to the blades when these are in one cooperative position than when they are in the other position.

3. The combination of a supporting structure; a knife carrier; means for moving said knife carrier toward and from the sup porting structure; two coacting knife blades respectively mounted on the supporting structure and on said carrier; with a plurality of separate sets of holding devices for each of said blades for supporting them in a plurality of coacting positions; and means for intermittently feeding sheet material to said blades in lengths depending on their positions.

t. The combination of a supporting structure; a knife holder mounted thereon and including two devices for holding a blade in either of two positions; a knife carrier formed with two receiving portions for supporting a knife blade in either of two positions; knife blades respectively mounted on said holder and on said carrier; means for causing said holder and carrier to move rela tively toward and from each other; with means for intermittently delivering sheet material to the knife blades in amounts dependent upon their positions.

5. The combination ofa supporting structure; a knife blade thereon adjustable to either of two positions: a knife carrier having two projecting ribs; a second knife blade capable of attachment to either of said ribs to permit of its coaction with the first blade; means for causing relative movement of the supporting structure and knife carrier toward and from each other; and means for feeding sheet material to the knife blades in lengths depending upon the positions of said blades upon the supporting structure and carrier respectively.

6. The combination of a supporting structure; a knife blade thereon adjustable to either of two positions; a knife carrier having two projecting ribs; a second knife blade capable of attachment to either of said ribs to permit of its coaction with the first blade; means for causing relative movement of the supporting structure and knife of the supporting structure and knife carrier toward and from each other; means for feeding sheet material to the knife blades in lengths depending upon the positions of said blades upon the supporting structure and carrier respectively; with a spring presser-foot supported by the carrier and mounted in either of two positions adjacent the ribs.

8. The combination of two structures; means for moving one of said structures toward and from the other; two cooperating main knife blades respectively carried by said structures and each adjustable to either of two positions; two auxiliary blades for each of the structures respectively constituting continuations of each of said main blades when the latter are in one or the other of their adjusted positions; with means for intermittently feeding sheet material to said blades in lengths depending upon their adj ustment.

9. The combination of two structures; means for moving said structures toward and from each other; a plurality of knife blades on each of said structures of which one blade at least is adjustable to either of two positions; auxiliary knife blades for each of the structures of which one blade is formed to connect said first and second knife blades when the adjustable blade is in one position and the other blade is formed to connect said blades when the adjustable blade is in another position; with means for intermittently feeding sheet material to said blades in lengths depending upon their adjustment.

10. The combination of two structures; means for moving said structures toward and from each other; a main knife blade on each of the structures adjustable to either of two positions; one set of auxiliary knife blades for each of the structures formed respectively as continuations of the main knife blades when these are in one position; a second set of auxiliary knife blades for replacing first set of auxiliary blades when the main blades are in their second positions; with means for intermittently feeding sheet material to said blades in lengths depending upon their adjustment.

11. The combination of two structures movable toward and from each other; main coacting knife blades respectively mounted on said structures and adjustable to either of twopositions; a pair of auxiliary knife blades for each of said structures extending outwardly from one end of the main blade on its structure when this is in one of its adjusted positions; a second set of auxiliary blades for each of said structures, of less length than said first set of auxiliary blades and formed to extend outwardly from one end of the main knife blade when this is in its second adjusted position; with means for intermittently feeding sheet material to the blades in lengths depending upon the adjustment of said blades upon the supporting structures.

STEPHEN DERRINGER. 

